Key restricting device

Details Key restricting device Key restricting device

1995-08-11

1997-07-29

Gall, Lloyd A.

Locks

Special application

For control and machine elements

70416, 292359, E05B 1300

Patent

active

056512791

ABSTRACT:
A voluntary key restricting device attached to the interior side of an entry door to prevent the unlocking of a cylinder locking dead bolt mechanism by any outside key or burglar cylinder lock picking device. This device will prevent a dead bolt knob from rotating regardless of the angular locked position of the knob without the addition or removal of supplemental parts. It is self contained, requires no tools to install, requires no modifications to an existing door and has a built in child deterrent locking feature.

REFERENCES:
patent: 1700135 (1929-01-01), Lanes
patent: 2461676 (1949-02-01), Budak
patent: 3423974 (1969-01-01), Bernsley
patent: 3748882 (1973-07-01), Dusault, Jr. et al.
patent: 3921423 (1975-11-01), Hollins
patent: 4127967 (1978-12-01), Franzl
patent: 4700556 (1987-10-01), Wade, Sr. et al.
patent: 5003803 (1991-04-01), Richards
patent: 5515704 (1996-05-01), Van Nguyen
Photographs of auxiliary locking device submitted to Schlage Lock Company in Oct., 1993.

Affiliated with

Also associated with

Rating

Key restricting device does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Key restricting device, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Key restricting device will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-627217